A.only when the load is taken off the cable
B.only when there is a load on the cable
C.only when activated by the controls at the lowering station
D.at any time
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A.sufficient oxygen in a compartment to support life
B.combustible gases present
C.hydrogen gases present
D.All of the above
A.danger
B.dangerous
C.dangerously
D.dangering
A.meet
B.face
C.be in front of
D.follow
A.breaking the weak link
B.releasing the tie-down strap
C.pulling the operating cord
D.releasing the CO2 canister
A.couducts electricity
B.should be directed at the base of the fire
C.is most effective on burning gases which are flowing
D.extinguishes by cooling oil fires blow ignition temperature
最新試題
Before any loading takes place any signs of the previous cargo should do（）.
Which of the following is not an operation mode of AIS?（）
When steering by autopilot,how often should the steering be checked?（）
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
Which of the following is not a form of precipitation?（）
It is dangerous for vessels without the operational radar（）the estuary.
The helm command PORT TWENTY means（）.
What is it called when it is possible to ignite the vapour above the oil?（）
The loading of the ship must be done in accordance with（）.
When the wave period and the apparent rolling period are the same（）.